Question: What are the ionizing radiation which start with the letter n
Paraphrase: What is the ionizing radiation that begins with letter n
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q186161 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'n')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: neutron radiation, neutron radiation